Allied Telesis AT SPBD20-14/I

SFP (mini-GBIC) transceiver module - 1GbE - 1000Base-BiDi, 1000Base-LX - up to 20 km - 1490 (TX) / 1310 (RX) nm - for AT x240; CentreCOM AT-GS970EMX/52, x230-18; CentreCOM SE240 Series